International Research Fellow Awards: Atmospheric Deposition and Throughfall in the Amazon Basin; Effects of Land Use Change

[901158]威廉斯国际研究员奖励计划使美国科学家和工程师能够到国外进行三到二十四个月的研究。该计划的奖励为联合研究提供了机会，并利用独特或互补的设施、专业知识和国外的实验条件。该奖项将为Michael R. Williams博士和巴西圣保罗大学的Luis Antonio Martinelli博士提供为期12个月的支持。该项目由美国-巴西项目提供支持。威廉姆斯将在亚马逊流域调查土地利用变化对大气沉积和通过降雨（通过树冠的降水）的养分循环的影响。这项工作的结果将增加我们对热带雨林化学的了解，热带雨林是世界上最不为人所知的生物群落之一。这项研究对于展示栖息地破坏如何改变亚马逊地区的生态系统功能至关重要。CENA和华盛顿大学的科学家们正在进行一项互补研究，研究河流和集水区的生物地球化学动力学。除了与Martinelli博士的合作外，还将建立许多合作关系

9901158WilliamsThe International Research Fellow Awards Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will provide Dr. Michael R. Williams with twelve months of support to work with Dr. Luis Antonio Martinelli at the University of Sao Paulo, CENA, in Brazil. Support for this project is provided by the U.S.-Brazil Program.Dr. Williams will be investigating the effects of land-use change on atmospheric deposition and nutrient cycling via throughfall (the precipitation that passes through the canopy of trees) in the Amazon basin. Results from this work will increase our understanding of the chemistry of this tropical rainforest, which is one of the least understood biomes of the world. This research is critical to show how habitat destruction changes ecosystem function in the Amazon.Scientists at CENA and the University of Washington are working on complementary research, on the biogeochemical dynamics in rivers and catchments. Numerous collaborations will be forged, in addition to the one with Dr. Martinelli.***